Bobbin-carrier for braiding-machines



F. KLEIN.

BOBBlN CARRIER FOR BRAIDING MACHINES APPLICATION FILED SEPT- I3, I919.

Patented Nov. 9, 1920.

3 SHEETSSHEET I.

l -ll mnr ll l l l v F. KLEIN. BOBBIN CARRIER FOR BRAIDING MACHINES.

APPLICATION FILED SEPTI I3, 1919.

1,358,216. Patented Nov. 9, 1920.

3 SHEETS-SHEET 2.

F. KLEIN.

BOBBIN CARRIER FOR BRAIDING MACHINES.

APPLICATION FILED SEPT. 13, I919.

Patented Nov. 9, 1920.

3 SHEETSS HEET 3- UNITEDQSTATES' arent orrics.

FREDERICK KLEIN, OF NEW YORK, N. Y., ASS-IGNOR TO NATIGNAL INDICATOR COMPANY, OF ISLAND CITY, NEW YORK, A CORPOBA'IION OF NEW YORK. BOBBIN-CAREIER BRAIDING-MACHINES.

3,553 213 Specification of Letters Patent. P t td N 9, 92 Application filed September 13, 1919. Serial No. 323,487. Toallwhom itvizayconcern: is suilicient to release the bobbin-locking 55 Be it known that I, Fnnnninon Know, a means means being provided to automati citizen of the United States, and resident of cally lock the bobbin against rotation after the borough of Manhattan, city, county, and the same predetermined rotary movement.

5 State of New York. have invented certain Another important objector the invention new and useful Improvements in Bobbinis to provide means wherel'iy a substantially 60 Carriers for Braidirig-Machines, of which uniform tension will be maintained on the the following is a specification. braiding thread throughout all the move- This invention relates to a bobbin carrier ments or the carrier about the braiding ma for that type of machines designed for prochine.

ducing a tubular braided structure. either Other important objects and advantages of 65 in the form of a covering for a core or as a the invention will appear hereinafter.

tubular braided cord or rope. In the drawings, Figure l is a side eleva- The bobbin carrier herein described was tion of the bobbin carrier; especially designed tor use in the braiding Fig. 2 a front elevation thereof;

machine shown in the joint application filed Fig. 3 a bottom View; 70 by Marius E. Penso and myself. on the 13th Fig. i a rear view with the base of the ,day of September, 1919, Serial No. 323,4:66, carrier partly in section and partly broken but of course it may be adapted for use in away;

any other braiding machine oft-he same type. Fig. 5 a horizontal sectional view taken (l ne oi the main ob ects of this invention approximately on the line of F 1g. 4; 75 is to provide a bobbin carrier wherein the big. 6 a View similar to Fig. l, showing braiding thread will be relieved of the stress the bobbin-releasing slide in its upper posiof rotating the bobbin or spool, said rotation tion;

being brought about automatically by means F '7 a horizontal sectional view taken of the rotation of the carrier about the braid- 011 the 11116 of t? 69 Showing the Paris 89 ing machine, whereby the said carrier will in their bobbin-releasing position;

be especially adapted for use in high-speed Fig. 8 a view similar to Fig. 7, with the braiding machines. It has been found that parts in their bobbin-locking position; where the bobbin or spool is rotated through F 1g. 9 a vertical section al view partly the tension placed upon the thread. the broken away of the bobbin supporting thread is frequently broken when the masleeve, with the bobbin thereon; chines are run at high speed. The bobbin Fig. l a diagrammatic view slowing the carrier described herein relieves the thread movement oi the bobbin carrier and ll 35 01'' the sudden stresses and strains which are thread take-up;

brought upon it whenthe tension on the i Fig. lO -a diagrammatic view showing thread is relied upon as the means for cans the position of the bobbin-re easing slide ing the rotation of the bobbin or spool, and when the bobbin carrier is in the position thereby avoids the frequent breaking ol the indicated in Fig. 10; I i

40 bobbin thread. Fig. 11 a view similar to Fig. 10, showing r'iiiiotlier important object of theinvention the bobbin carrier in a slightly different pois to provide a bobbin carrier wherein the sition; and tension on the braiding thread will merely Fig. ll a view showing the position of the release the bobbin and permit it to turn inbobbin-releasing slide when the bobbin is in 45 dependently of the stress on the braiding the position shown in Fig. 11.

thread. As the bobbin-releasing means will Referring to the various parts by numerbe operated by a slight tension on the thread, als, a? designates a circular base plate prothe danger of the thread breaking is very vided with a lateral or radial extension 48; remote. V 1 Concentrically mounted on the base plate 50 Another object of theinvention is to proare upper and lower circular plates 49, prefvide a bobbin carrier which is normally crably formed oi wood. suitably" treated locked against rotation, but which will be with a lubricating material, such as parafreleased for a predetermined rotary movcfin. These upper and lower plates are ment when the stress on thebraiding thread secured to the main base plate by means of inwardly bent integral fingers 50, which grasp the peripheries of the said plates, as clearly indicated in the drawings. The inner end of these fingers are bent into an nular grooves 51, formed in the plates 49, as clearly indicated in Fig. 3 of the drawings. In the center of the base plate is rigidly mounted a vertical stud 52, on which the bobbin is supported, as will be fully hereinafter described. In the radial extension 48' of the base plate is rigidly mounted a pilot.

post 53, said post extending slightly above the extension &8 and forming a support for the outer end of a horizontal plate 5d, the inner end of. said plate being rigidly mounted on the bobbin stud 52, as clearly shown in Fig. l of the drawings. Rotatably mounted on the lower end of the bobbin stud close to the lower plate 49 isa large guide shoe or shuttle 55, said shoe being of a general ovate form narrowed at itsends tosharp points, the curved sides thereof being on arcs having the same curvature as the annular walls of the pockets in which they are adapted to move, so that the sides of said guideshoes will fit accurately against said side walls. and travel there around, as described in the herein-men tloned application. 'Sa1d guide shoes are substantially equal in length to the diameter of the base plate 47, as clearly shown in Fig. 3 of the drawings. Rotatably mounted upon the lower end of the pilot post 53 is" i a double pilot shoe 56 having an upper shoe 56" and a lower shoe 56 both of these shoes being just below the main guide shoe 55, as clearly shown in Fig. 1 of the drawings. The double pilot shoe is of the same shape as the main guide shoe, and operates as described in the aforesaid application.

' The thread is wound upon a spool 58, and said spool is adapted to be fitted snugly over a split wooden sleeve 59, which is adapted to fit over the stud 52. Sleeve 59 is split near its upper end to form yielding spring-like sections, and is provided at its lower end with a flange 60, which is formed with peripheral notches 61, adapted to receive up standing pins 62 carried by a ratchet wheel 63, so that the sleeve carrying the bobbin will be locked to the ratchet wheel and can only rotate therewith. It may be readily removed, however, by lifting it off of the bobbin stud 52. The ratchet wheel rotates freely on the bobbin stud, said stud being rigidly connected to the base 47, as hereinbefore described. The purpose of splitting the sleeve 59 is to provide a yielding grip- 7 ping connection between the bobbin spool 58, so that said spool will run with the sleeve 59 when the ratchet wheel is free to rotate, but will also be free to rotate slightly under the strain of the rapid movement of the carriers about the machine without injuring the bobbin spool or the sleeve.

This independent movement between the bobbin spool and'the sleeve is very slight, but it has been foundto be suflicient to destroy the spool, unless the spool is permitted to slip on: the sleeve under" considerable stress. vThe frictional engage nent'between the spool and the sleeve and'the ratchet wheel to rotate with the spool when the ratchet: wheel is freed, as will behereinafter described.

'Mounted rigidly on the plate 54- is a vertical post 6% in which is formed a vertical slot 65. In this slot is arranged to reciprocate vertically a bobbin-releasing slide 66. in the upper and lower ends of the post are mounted guide rollers 67 and 68, over which is run a long delicate coiled spring 69, one endof said spring being connected to the bobbin-releasingslide, the other endthereof being connected to a pawl 70, which is pivotally supported by the plate 54, the spring 69 serving as means to hold the said the sleeve is sufficient to cause pawl up into engagement with the teeth of the ratchet wheel 63. This pawl serves at all times to prevent backward or. anti-clockwise rotation of the spooland the sleere on the bobbin stud. Pivotally mounted on the post at? 1 is a ratchet-releasing lever 72, whose upper end the bobbin-releasingslide 66 when said slide nears the limit of its upward movement, as

indicated in Fig. 6. Pivoted on the plate 54c is a horizontal escapement dog 73, said dog being in the form of a bell-crank pivoted at 7 i, and provided with an upstanding finger 7 5 on one arm thereof. The lower end of the bobbln-releasmg lever (2 engages is normally in the path of an angularly disposed slot 7 6, in the other arm of the bell-crank escapeinent dog, as

shown clearly in Fig; 5, so that as the bobbin-releasing lever 1s rocked by means of the slide 66, the escapement dog73 will be rocked on itspivot and the finger 7 5 will be moved out of engagement with the teeth of V the ratchet wheel, as indicated clearly in Fig. 7 ofthe drawings. The ratchet wheel is provided with four teeth '77, which are longer than the other teeth of the wheel,

these longer teeth being arranged equal: distances apart around the wheel. The finger.

escapement dog is rocked on its pivot, and

the stop finger 75 is brought into engagement with one of the other long teeth of the ratchet wheel to'lock the ratchet wheel and consequently, the bobbin, against further rotation. Mounted on the slide 66 is a roller.

The slotted end 79, and on the upperend'of thepost are mounted two thread guides 80 and '81. On the post near the lower end'thereof is pivoted a vertically disposed throw-elf bar 82, provided with two outwardly extending arms SS and 84. On the arm 84 is mounted a hook 85. The lower end of the slide 66 is adapted to bear on the upper edge of the throw-0ff bar at one side of the pivot thereof, and between the pivot and the hook 85, as clearly shown in Fig: 2. The thread from the bobbin is-carried under the hook 85, then up over the hook 81, then down under the roller 79, and up through the open thread guide 80 at the top of the post Gel;

W hen the tension on the braiding thread is suiiicient to draw the slide 66 to the upper end of its guide slot, the said slide will move the bobbin-releasing lever on its pivot and cause the lower end of said lever to swing the escapement dog 73 to the position shown in Fig. 7 thereby releasing the ratchet wheel and the bobbin or spool carried by the ratchet wheel. This will permit the bobbin to rotate, and thereby permit the spring 69 to pull the slide downwardly in the guide slot. The rotation of the spooland the ratchet wheel will bring one of the long teeth 77 into engagement with the lug 78, thereby forcing the escapement dog 73 back to its normal position and swinging the stop linger 75 into the path of one of the long teeth 77 thereby'stopping the ratchet after a one-quarter turn. The bobbin is then looked against rotation in both direc tions, the dog holding it against back or ai'iti-clockwise rotation, and the finger holding it against clockwise rotation. The parts will now remain in this position until the tension on the thread. is suflicient to again lift the slide (36 to the upper end of its guide slot.

In the operation oi a machine constructed as shown. in the herein-mentioned applicatien, it was found that the bobbin tended to rotate when the bobbin carrier changed its direction of movement and was switched from one carrier disk to the next carrier disk of the series. To prevent it rotatii'ig in the wrong direction, the detent pawl 70 was provided. By providing the bobbinreleasing slide 66 and the bobbin-releasing lever 72. thebobbin was released and permitted to rotate in a clockwise direction whenever the tension on the braiding thread was sufficient to move the slide 66 to the upper part of its guide slot. Vhen the escapement dog 73 is released from the ratchet wheel it remains out of engagement therewith until the bobbin and the ratchet wheel has made a one-quarter turn to bring the next long tooth 7 Tinto engagement with the lug 78. This turning of the bobbin will take place at thetirst' reversal in the direction of movement of the bobbin carrier around the machinegthat is to say, at the first change of the bobbin carrier from one carrier disk to the next carrier disk of the series. This tei'idency of the bobbin. to rotate is due to the momentum of'the bobbin carrier, as it is moved rapidly about the machine. It is ery important that the braiding thread be relieved of the strain of rotating the bobbin. It is manifest that in a high-speed braiding machine such as that disclosed in the said application, the braiding threads are apt to be broken if the tension thereon'is relied upon to bring about the rotation of the spool orbobbin. For

that i'eason it is desirable that the rotation oithe bobbin be brought about by some other means. liy freeing thebobbin and permit ting it to be rotatedby its own momentum as its direction of movement is changed, the

braiding thread isrelieved almost entirely oi. strain, with the result that the breaking oi. the threads is avoided.

As the bobbin carriers are moved in and out in their undulating path around the machine, the slide66 will move up and down in its guide slot to take up theslack in the thread caused by the said in-and-out movement. As the thread is used up in the braiding operation, the slide will. gradually ap-= proach the top of its guide slot and will finally engage the bobbin-releasing lever and thereby free suiiicient of the braiding thread topermit the slide tomove downwardly under theinfiuence of its spring. Thereafter it will move up and down in its guide slot gradually approaching the upper end thereof as the thread is used up. By pro viding the long delicate spring 53.) the tension on the thread is substantially uniform at .ll points in the travel of the carrier. By providing the open hooks 80, 8]. and 85, and the roller 79, the three-Id from the bobbin may be threaded through the bobbin carrier readily and'without the necessity of passing it through guide apertures.

lVhat I claim is I 1. A ca rier'i or a braiding machine comprising a base, means for rotatably supporting a spool above said base, aratchet wheel connected to said spool and rotatable therewith, alocking pawl adapted to engage said ratchet wheel to prevent the rotation thereof in one direction, a pivoted stop pawl adapted to engage said ratchet wheel to prevent its rotationin the other direction, a releasing slide supported by the base and mounted to move vertically, a spring connected to said slide and normallyholding it at-the lower end of its movements-a pawl-releasing lever supported. by the baseand adapted to be engaged by the releasing slide when said slide approaches the upper end of its movement, the lower end of the releasing lever engaging the pivoted step pawh stationary thread guides supported on the base, ano'a its movable thread guide mounted on the re leasing slide, whereby the tension on the thread will tend to move the releasing slide upwardly. i

2; A carrier for a braiding machine comprising a base, a vertical central spool-supporting studvv rigidly mounted thereon, a vertical post carried by said base, a spoolsupporting sleeve mounted on said stud, a ratchet wheel loosely mounted on said stud, means for locking the sleeve to said ratchet wheel, a locking pawl adapted to engage said ratchet wheel, a pivoted stop pawl adapted to engage said ratchet wheel, a releasing slide mounted in the post to move vertically, a spring connected to said slide a and normally holding it at the lower end of its movement, a releasing lever pivotally mounted on the post and adaptedto be engaged by the releasing slide when said slide approaches the upper endof its movement, the lower end of said lever engaging the ratchet stop pawl, stationary thread guides mounted on the post, and a thread guide mounted on the releasing slide, whereby the tension on the thread will tend to move the releasing slide upwardly.

8. A carrier for a braiding machine comprising a base, means for rotatably mounting a spool thereon, a ratchet means for releasing and locking the spool, a releasing lever connected to said ratchet means, a vertically movable releasing slide carried by the base and adapted to engage the releasing lever, a thread guide mounted on said slide, a long coiled spring connected at one end to the base and at its other end to the releasing slide, and a pair of rollers interposed between said points of connection to receive and support said spring intermediate its ends.

4L. A'carrier for a braiding machine comprising a base, a vertical central spool-supporting stud rigidly mounted thereon, a vertical post carried by said base, a spool-supporting sleeve mounted on said stud, a ratchet wheel loosely mounted on said stud, means for locking the sleeve to said ratchet wheel, a lockin pawl adapted to engage said ratchet wheel, a pivoted stop pawl adapted to engage said ratchet wheel, a releasing slide mounted in the post to move vertically, a spring connected at one of its ends to said slide and at its other end to the locking pawl, a pair of guide rollers mounted in the post near the upper and lower ends thereof and adapted to be engaged by the spring intermediate its points of connection to the slide and the locking pawl, said spring normally holding the slide at the lower end of its movement, a releasing lever pivotally mounted on the post and adapted to be engaged by the releasing slide when said slide approaches the upper end of its movement,

the lower end of said lever engaging the ratchet stop pawl, stationary thread guides mounted on the post, and a thread guide mounted on the releasing slide, whereby the leasing and locking the spool, a releasing slide supported by the base adapted to be moved by the braiding thread, means oper ated by said slide to release the ratchet means, and means operated by the rotation of the spool to lock the spool againstrotation.

6. A carrier for a braiding machine comprising a base, means torrotatably mounting'a spool thereon, a ratchetwheel mounted thereon, means for locking the spool to the ratchet wheel, a stop pawl adapted to engage said ratchet wheel to prevent the unwinding of the thread from the spool, a releasing slide mounted on the base, means adapted to be operated by said slide to release the stop pawl from the ratchet wheel, and means operated by the ratchet wheel to bring the stop pawl into engagement therewith. p V

7. A carrier for a braiding machine comprising a base, means for rotatably mounting a spool thereon, a ratchet wheel mounted on the base, means for locking the ratchet wheel to the spool, a stop pawl adapted to ing a spool thereon, means for locking said spool to prevent the unwinding of the thread from the spool, means adapted to be'operated by tension on the thread to release said spool-locking means, and means operated through the rotation of the spool to restore the spool-locking means to its locking position.

9. A carrier for a braiding machine comprising a base, means for rotatably support ing the spool above said base, a ratchet wheel connected to said spooland rotatable therewith, some of the teeth of said ratchet wheel being longer than others, alocking pawl pivoted on the base and adapted to engage said ratchet wheel, a pivoted bellcrank stop pawl pivoted on the base and provided with a stop finger on one of its arms adapted to engage the long teeth of the ratchet wheel,'a lug being formed on the end of the other arm of said bell-crank and adapted to be engaged by. the said long teeth of the ratchet wheel toithrow the stop finger into the path of said long teeth, and means adapted to be operated through the tension on the thread to release the bellorank stop pawl from the ratchet wheel.

10. A carrier for a braiding machine comprising a base, means for rotatably mounting a spool thereon, a ratchet wheel mounted on the base and rotatable with the spool, a bellorank stop pawl adapted to engage said ratchet wheel to prevent the unwinding of the thread from the spool, means operated through the tension on the thread to release said stop pawl from the ratchet, and means operated by the rotation of the ratchet to move said stop pawl into engagement with the ratchet.

11. A carrier for a braiding machine comprising a base, a vertical post for supporting the spool, a split sleeve mounted on said post, a ratchet wheel loosely mounted on said post, means for connecting the ratchet Wheel to said split sleeve, and a spool sleeve to re ceive the thread and adapted to fit snugly over the split sleeve whereby the ratchet wheel and the split sleeve will rotate together and the spool sleeve will be frictionally held on the split sleeve.

12. A carrier for a braiding machine comprising a base, ing the spool, a ratchet wheel loosely mounted on said post, thread operated means for controlling the rotation of said ratchet wheel, a split sleeve mounted on said post and adapted to be detachably locked at its lower end to said ratchet wheel, and a spool sleeve adapted to receive and frictionally engage the split sleeve and carrying the thread.

This specification signed this tenth day of September, A, D. 1919.

FREDERICK KLEIN.

a vertical post for support 

